Validation of the CHAN-Component in TRACE Using BWR Full-Size Fine-Mesh Bundle Tests (NUREG/IA-0232)

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Publication Information

Manuscript Completed: December 2007
Date Published: August 2010

Prepared by:
M. Thieme, Dr. W. Tietsch

Westinghouse Electric Germany GmbH
Dudenstrasse 44
68167 Mannheim
Germany

Prepared as Part of:
The Agreement on Research Participation and Technical Exchange
Under the Thermal-Hydraulic Code Applications and Maintenance Program (CAMP)

U.S. Nuclear Regulatory Commission
Washington, DC 20555-0001

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Abstract

This report has been prepared at Westinghouse Electric Germany GmbH. The aim of this work is the validation of the CHAN-component for the systems code TRACE. For this pur-pose selected experimental NUPEC BFBT void fraction tests as well as critical power steady state and transient tests have been used to be compared to TRACE Version 5 RC 2 calcula-tions. The NUPEC experiments contain uniquely detailed data measured not only as bundle averaged but also in a very detailed, spatial resolution down to 0.3 mm. Hence these tests are very appropriate for the validation.

In this report a description of the BFBT experimental set up, measurement technique is giv-en. A description of the detailed TRACE modes of physical models and the steady state and transient TRACE calculations for the selected experiments as well the boundary conditions are also included in this report. A comparison between code predictions and measurements is presented and discussed.